Apparatus for the application of prepared adhesive to webs



O. C. ROESE N Feb. 20, 1945. 2,369,801 APPARATUS FOR THE APPLICATION OF PREPARED ADHESIVE TO WEBS Original Filed Oct. 9, 1941 J m me C 7 a x 0 fihv u wwh,

fi S ATTORNEYS Patented Feb. 20, 1945 ED ADHESIVE TO WEBS Oscar C. noesenpscarsdale, N. Y., assignor to Wood Newspaper Machinery Corporation, Plainfield, N. J., a corporation of Virginia Original application October 9, 1941 Serial I No. 414,274. Divided and this application October 26. 1943. Serial N0. 507,698

u a I 3 Claims. 1(01. 1 54-36) This invention relates to the application of coatings to webs of'pa per or like flexible sheet material, and more particularly concerns apparatus for use in the application of prepared ada new roll which involves the-application of an adhesive, and, in some cases an adhesive repellent, to areas adjacent the inner or core end of the web on the roll. The method and apparatus so devised are described in detail in my copending application Serial No. 403,515, filed July 22, 1941, now Patent No. 2,320,656. In accordance with the invention disclosed in that application, layers of a special self-sticking adhesive are located respectively at the outer or leading end of the web and at or adJ acent the inner or core end of the web on each roll. The self-sticking adhesive layers must be applied in liquid form and thereafter dried until their-surfaces do not adhere to an uncoated web surface.

web roll after it is wound up, either by applying the adhesive directly to the web on the roll and g drying it thereon, or by splicing to the leading endof such web a short section carrying thedesired adhesive layer.

The complementary adhesive layer at or adjacent the inner or core end of the web on the rollobviously cannot be applied after the roll is wound up, and he application and drying of this material or of other coatings while the roll is being wound sometimes presents difilculties.

Paper web rolls are customarily formed by winding the Web emerging from the calender or other final finishing device of a paper making suitable cores, the 'webbeing severed when each The outer or leading end adhesive layer may be readily applied to the new winding operations and while the web is shifted from a completed roll to a new core.

In accordance with the present invention, the self-sticking adhesive layer orother similar coating to beapplied in liquid form and dried before Winding the roll, is applied to and dried on thin sheets'of paper or like material, and improved apparatus is employed to secure one of these Sheets to the web surface as it travels at a high velocity to the roll winding device. The invention also contemplates the provision. of a control mechanism that acts to correlate the application of the prepared coating-carrying sheet with the starting of anew r'oll so that the coating is disposed at or adjacent the inner or core endof the web on each roll. v

Other objects, advantages and characteristic features of the invention will be pointed out or will become apparent as the description of the disclosed embodiment thereof progresses.

This application is a division of my copending application Serial No. 414,274, filed October 9. 1941, entitled Application of prepared adhesive to webs.

In describing the invention in detail, reference will be made to the accompanying drawing in which a typical vembodiment thereof has been illustrated. In the drawing;

Fig. 1 is a diagrammatic and simplified eleva-.

30 tion of apparatus suitable for applying coatings to machine or the web from a large parent r611 onto roll reaches the desired size and the severed end of-the web being started on a new core without interruptingthe continuous and rapid movement of the web. 'It is essential to convenientvhandling and economic production that the web move con tinuously to the winding device and that its speed a web during the windingthereof into rolls in accordance with the invention;

Figs. 2' and 3 are simplified elevations, showingthe roll-winding mechanism in diiierent operat- I ingpositions; I

Fig. 4' is a perspective view of the cylinder em-' ployed to apply the prepared coating-carrying 'sheetto theweb; and v Fig. 5 is an edge view 05 a coating-carryingsheet. I r

I The present invention contemplates the appll cation of a prepared coated sheet to at least one surface of a rapidly moving; web running to a roll winding device andthe synchronization of the application of' such coating with the transfer of the web from a completed l'Oll'iiO the core of a new'roll in such-fashion that the section of the each turn of the wound roll. In certain cases. an adhesive repellent is applied to the web surface of travel bemaintaine'd-uniform throughout he 66 opposite that bearing the adhesive, the'repellent coating preferably extending slightly beyond the adhesive coating toward the core end .of the web on each roll fora purpose hereinafter explained.

The web 9 of paper or other flexible sheet material to which the coated sheets are applied may be supplied from a paper-making machine generally indicated at F in Fig. 1, or from a large parent rol1"8. I have illustrated at I the usual dryin'g drums of the paper-making machine F which may be of the Fourdrinier type. The paper a web 9 is continuously formed in a known manner by the machine, and is dried on the drums I from which it passes to the usual calender C where its surface is finished.

The rapidly moving web 9 issuing from the calender C or from the parent roll 8 is guided by suitable rollers, Ill, and i2, past an adhesive sheet applying device designated S and to be described, toa roll winding device designated R. The device R may take any suitable form'and generally is-so designed that it winds the web 9 into a succession of web rolls of the desired size, severing the web running to a substantially completed roll and starting the severed end on a core to start the winding of a new roll without interrupting or retarding the rapid continuous movement of the web. Various forms of web roll winding devices for accomplishing these functions are known, and any-of such known forms may be used within the scope of the present invention.

The winding device It illustrated is of the type generally termed a "Pope rewinder and since its construction and operation are well known, it will be but generally described herein. The details of such a device are set forth in the Pope Patent No. 1,248,542. As illustrated in Figs. 1, 2 and 3, the device R includes an under roll H which is suitably driven at a speedsuch that its peripheral velocity is equal to or slightly greater than the velocity at which the web 9 is delivered to starts the severed web end around the rotating core l8 and so initiates the winding of a new roll '29. The wound roll 26 on the core I5 is then l9 whereupon these arms are swung back to the ready position (Fig. l) to receive a new core in preparation for the next web transfer operation, thus completing the cycle.

The device S acts to apply to the web 8 a prepared sheet 30 (Fig. 5) carrying an applied and dried'coating 3| on the surface thereof which becomes the exposed surface when the sheet is.

secured to the web. The sheet may be formed of any thin flexible material such as thin paper, thin transparent sheets of degenerated cellulose or cellulose derivatives or the like. The coating 3| may comprise any coating material which is Y applied in liquid form and dried. The invention the winding device. The under roll [4 cooperates with two core-rolls l5 and ii to wind rolls. of web successively thereon. Each core roll I5 and It has journals l1 extending through journal boxes l8. Two. separately movable frames are is particularly applicable to the preparation of paper web rolls for use in printing presses, and in such application, the coating 31 preferably comprises a self-sticking adhesivesuch as a rub ber cement. Such materials are described in detail in my Patent No. 2,320,656, referred to above. As there explained, the self-sticking adhesives have the property of adhering tenaciously to a.

paper or other web when applied thereto in liquid form, but when dried, do not adhere to an uncoated web surface. After the self-sticking adhesive is applied and dried, it coheres tenaciously with a similarly applied and dried coating.

The coating may be applied to the sheet 33 ion. A tacky adhesive 32, which may comprise provided for the core rolls, a startingframe comprising the arms l9 pivoted at a point above the axis of the under roll I4 and a running frame comprising a pair of arms Divotally supported in the bed frame. at one side of the under roll II. The arms ill have bifurcated ends 24 constructed to receive the journal boxes II, and the arms Zll'have recesses 25 for receiving and en gaging the core roll Journals IT as shown in Fig. 3.

In operation, while a web roll 26 is being wound I,

the web roll 26 has reached the required size,.

the arms iii are swung back to the starting position (Fig. 2) so that the core roll 13 engages the moving web backed by the under roll I and the core is accelerated to web speed by such em.

gagement. The. web is then severed at a point between the core l6 and the completed roll 33, preferably by a blast of compressed air issuing from a nozzle 21 and directed beneath the edge "of the web carried onthe under roll. i4, and this air blast, aided if n by'air from an auxiliary nozzle 23 extending of the web,

fluid pressure cylinder 31. The-operatiomofmpiston 3iisgovernedbyasolenoldoperctedvalverosin glue, paste or. the like, is applied to a part or all of the surface of the sheet 33 which engages the web 3. The tacky adhesive may be applied before the sheet is placed on the applying device S or afterward.

Referring now to the sheet applying device 8,-

it includes a large diameter light-weight cylinder 33 rotatably mounted with its cylindrical surface adjacent one surface of the web 0 and its axis extending transversely of the path of web travel. The cylinder 33% preferably driven at a speed such that its peripheral velocity equals-or substantially equals the web speed, andthis may be accomplished 'bya driving connection; diagrammatically illustrated at 33, between the cylindersh-aft and-a drlvenweb engaging-patter the paper machine or the drive for the parent roll '3'. A. clutch or-the like; illustrated at '11s preferably included in the driving connection for the cylinder 33. w "'1'.

The web 9, guided by the'idl'er rollers ii and 35 engages the surface or the web opposltet'he cylinder 33.. The roller 33' is suitably rotatably mounted and is movable. upward to .press the web 3 onto the surface of the; cylinder 33. This may be accomplished as illustrated by rotatably mounting the roller 3| in a verticallymovable frame carried or propelled .by a pistonin-.0

gular extent thereto.

' push. button switch the bare surface of the cylinder43. 'Energization ,7 of the solenoid 4| severs the web Son the winding device R and transfers the severed end thereof to a new core "5 to start winding ainew roll as v33 which when opened by enorgization of its solenoid 39 admits compressed air orother pressure fluid from a suitable source to the cylinder 31 and so lifts the piston '36 and the pressing roller 35 with the result that the web 9 is pressed against the cylinder 33. Upon de-energization of the solenoid 39, the valve 38 cuts off the fluid pressure and ventsthe cylinder 31 so that the ually operable push button switch 42, wires 43,

44, 45 and, 46, a timing switch '41 controlled by the angular-position or the cylinder 33, and a wire48. k

While the web 9-is travelling to a roll such as the roll 26 on the winding device R, the cylinder. 33 is stopped by opening the clutch in its driving connection and a sheet "30, prepared a ex-- plained above; is removably secured to the cylinder surface in-the manner to be described. The surface of the sheet 30 that engages the cylinder be a self-sticking adhesive. The sheet 30 is preferably approximately as wide as the web 9, and

{18 of sufllcient length to form a coating extending along the required length of web. The circumference of the cylinder 33 is appreciably greater than the length of the sheet 39 so that a portion of the cylinder surface is left bare as shown at 50.

- across the timing switch 4''! through the wires explained above, and closes a holding circuit 60 and 6| and the contacts 62 which are closed upon energization of the solenoid 4|. As the cylinder 33 rotates, the outer surface of the sheet 3|! carrying the tacky adhesive 32 is pressed on and stuck tothe web 9, the. frangible tabs 5| are broken and the sheet 30 peels off the cylinder 33 and travels along with the web. This places the coated sheet adjacent the inner or core end'of the web forming the roll wound on the core I6.

I The describedv operation may be repeatedeach surface carries the dried coating 3|, which may The sheet may be removably secured to the surface ofthe cylinder 33 by anyknown suitable means. In the disclosed embodiment, each end of the sheet 30 is secured to the cylinder by frangible gummed tabs 5|, but a weak adhesive between the under surface of the sheet and the cylinder surface may be used if desired. The opposite ends of thetabs 5| illustrated are respectively stuck to the'outer surface of the sheet ends and the adjacent cylinder surface, and a weakened portion such as a line of perforations 52 separates the tabends so that the tabs tear along this line and release the sheet from the cylinder when the sheet is stuck to the web 9. Frangible tabs of this type are described in detail in U. S. Patent No. 1,996,497.-

The timing switch 41 is arranged to close the circuit between the wires'46 and 48 only when the bare section 50 of the cylinder 33 is opposite the pressing roller 35. As shown, this -inay be accomplished by providing} conducting segment 53, --electrically connected "through the .roll shaft or otherwise to thewires 4i and. and engaged by a stationary contact ii4l cqnnect d-gto' the wire 48-. The sector 53 is diametrically; pipe @the .bare section 50 of :the cylinder 33'.and

with a preparedsheet 39 reino .the'lcylinder -33, the driving ccnnectioniof-thej cylinder is established and ,thecyjlinder is accelerated to web speed. when the roli-l d-has W "i lily-secured required lead of therepellent coating over the adhesive-carrying sheet 30, for,the purpose extime the web is transferred to a new core to start winding a new roll.

If necessary or desirable; the tacky adhesive 32 may be dried by hot air or other known means acting in a stationary drier 49 surrounding the web between the sheet-applying device S and the winding device R.

A web carrying a dried coating of the selfsticki-ng adhesive referred to above maybe wound intoa roll without adherence between the coated surface and the uncoated surface ofthe super- Since adhesives and coatings other. than the described self-sticking adhesive might be used, and in any case to positively insure posed layers.

against adherence between adjacent roll layers, it is frequently advisable to apply a repellent coating to the opposite surface of the web 9 from-that carrying the. prepared dried coating. 1 The repelle'nt may comprise an adhesive'repellent such as paraffin or any other suitable wax or wax-like composition, and it is preferably applied in solu-.

tion and dried by the drier 49. Since the coating on thesheet 30 is applied to the web surface which becomes'the inner surface of each layer on the roll, the repellent coating must cover the opposite web surface over a length of web extending beyond the adhesive coating toward the core endof the web on each roll, the lead of the repellent coating being at least suflicient to form one turn on the roll. With this arrangement, the entire surface of the roll is covered with web bearin I repellent to the under surface of the web 9 by a,

the repellent before the prepared coated sheet on the inner web surface is wound thereon.

- f The repellent coating, when used, may be applied by sticking a prepared sheet carrying the device identical with the prepared coating sheet applying device S described above. It is generally simpler however to spray the repellent onto the under surface of the web 9 as illustrated from reached the desired size; the operator closes the val. ,As soon as the bare section-iillpofthecylinder surface istangent to the moving web 9. the

42 and holds it for an inter timing switch 41 closes and the solenoids-3'! and 4| are energized. Energization of the solenoid 39 results in upward movement of the pressing roller 33 whereby the web 9 is firmly pressed against a reservoir 56 through a spray nozzle 51 under control of a solenoid 58 which when energized opens a valve 59 and supplies compressed air to the nozzle 51.

therewith. The nozzle 51 is spaced ahead of the cylinder 33 a'distance sumcient to provide the plained above.

From theforegoing description it will beseen that by employing the present invention, a prepared and dried coating of adhesive or other'material may be applied to a. moving web surface in predetermined relation to the core end of a web roll during windingof the roll and without interrupting or retarding either the production The solenoid 59 is connected as i shown in parallel with the solenoids 39 and 4| and accordingly is energized simultaneously or feeding of the web for the winding operation.

I claim: 1. In apparatus of the character described, in combination, a web'source, a roll-winding device receiving a continuously moving web from said source and including means operable to transfer a the moving web from a finished roll to a core to start winding a new roll, means for carrying a flexible sheet with a. prepared coating thereon comprising a rotatable cylinder disposed transversely of the path of travel of the web runnin to said winding device and having its cylindrical surface parallel to and adjacent the web, means aaoaaor ingsaid cylinder at a speed such that its peripheral velocity is substantially equal to the speed of the web, means for applying a coating to the other surface of the web and means for simultaneously pressing the moving web and the surface of the cylinder together, operating said coating-applying means and operating said web transferring'means of said roll-winding device.

for rotating said cylinder at'such a. speed that its peripheral velocity is substantially equal to the web speed and means controlled in accordance with the angular position of said cylinder for simultaneously-pressing the moving web and the surface of said cylinder together and operating said web-transferring means of said roll-winding device. v

2. In apparatus of the character described, in

combination, a web source, aroll-winding device 3. In apparatus of the character described, in combination, a web source,'a'. roll-winding device receiving a continuously moving web from said source and including means operable to transfer t e moving web from a finished r0ll to a core to tart winding a new roll, means for carrying a flexible sheet with a prepared coating thereon comprising a rotatable cylinder having its axis extending transversely of the moving web and its cylindrical surface parallel to and adjacent one surface of the web at a predetermined point in the path of travel of the web, means for rotating said cylinder at aspeed such that its peripheral velocity is substantially equalto the speed of the receiving a continuously moving web from said a source and including means operable to transfer the movingv web from a finished roll to a core to start windingv a new roll, means for carrying a flexible sheet with a. prepared coating thereon comprising a rotatable cylinder having its axis extending transversely of the moving web and its cylindrical surface parallel to and adjacent one surface of the web at a predetermined point in the path of travel .of the web, means for mtat- J.

' face of said cylinder together and simultaneously operating said coating-applying means and operating said web-transferring means of said rollwinding device.

" OSCAR C. ROESEN. 

